Nut-lock.



' Witnesses Y J. A. BRYANT.

NUT LOCK. APPLICATION FILED OOT.26, 1912.

1,076,098, Patented Oct. 21, 1913.

A wzm zfirymz Inventor Att orney's UNITED STATES PATENT ore-Ion.

JOSHUA A. BaYANc, or PRINcEroN, carrpnaym; ASSIGNQB DI T-WQ-THIBDS J 9HENRY oUI r, or PRINCETON, CALIFORNIA.

' Specification of Letters Patent.

Patented Oet. 21, 1913.

Application filed October 26, 1912. Serial N 0. 727,989.

Princeton, in the county of Colusa and State of California, haveinvented a new and useful Nut-Lock, of which the following is aspecification.

This invention relates to nut locks and has for its object the provisionof simple, inexpensive and practical means for looking a nut on itsbolt, thereby preventing the displacement of the nut, and furthermoreallowing the locking of the nut on any point determined upon.

In the drawings, forming part of this specification, and in which likecharacters of reference indicate corresponding parts, Figure 1 is a topplan view of the improved nut lock; Fig. 2 is a vertical section of thenut lock and two timbers fastened together thereby; Fig. 3 is a detailview of the hooksht-ped key.

Referring to the drawings,.by the reference characters marked thereon, 1designates the head of a bolt the body portion of which as illustratedin Fig. 2 of the drawings extends through two pieces of timber which areheld together thereby. The body portion 2 is formed integral with thehead 1 at one end thereof and the end remote therefrom is threaded andadapted to threadedly engage the nut- 3. The nut 3 is arranged so thatit can be screwed upon the bolt 2 without difficulty and it is providednear its outer extremity with a cut-away portion 4 which conforms to oneof the threads which is formed therein. The cutaway portion correspondssubstantially in form to the member 5, which may be convenientlydescribed as a metallic hook shaped key, the edge of the hook shaped keybeing cut-away so as to conform to the circumference of the bolt 2 withwhich it is to be used. The nut 3 is of the usual construction, exceptas regards the cut-away portion 4 which is preferably formed near theouter. surface of the nut, as shown. Thieut-away portion corresponds inform to the locking member 5 which is provided to engage therewith, asshown in Figs. 1 and 2 and fills the curvature of one of the threadsf0rmed;on the nut 3. When the member 5 is seated in the openin 4provided therefor, as shown in the drawlngs, it can be forced on intothe bolt which passes through the end, thus fastening the nut and themember 5 in position. 4

Inorder that the member 5 may conform ordinarily to the form of thebolt, the looking' of which is desired, the inner ed e of the member ispreferably provided with a double bevel 6 as clearly shown in Figs. '2and 3 of the drawings. This double bevel conforms to the surface of thescrew, as will' be readily seen.

The application of the device will be readily understood from theforegoing description. The bolt being seated in proper position, the nutwith the fastening member 4 fitted thereinto is screwed onto the boltuntil the nut is suitably tightened. Then a pressure on the ends of themember 5 will result in the forcing of it around into the position shownin the drawings. As soon as the member 5 occupies the position referredto, it will be impossible to loosen the nut, but if it is desired toloosen the nut, a blow on the far side of the member 4 will result inits being loosened enough to permit the unfastening of the bolt. and thedisengagement of the nut therefrom.

What I claim as new and desire to secureby Letters Patent is:

l. A nut lock comprising a bolt, a nut having an aperture extending intothe, outer face thereof and communicating with the threaded portion ofsaid nut, a hook shaped key extending within said aperture and adaptedto wedgedly engage the said bolt, the rear portion of said hey extendingbeyond said nut aperture whereby the same may be driven into engagementwith or dlsengaged from the said bolt.

2. The combination of a bolt, "a nut adapted to threadedly engage thesame, said nut provided with an arcuate aperture communicating with thethreaded portlon of said nut, -a hook shaped key conforming with theoutline'of said nut aperture and as my own, I have hereto afiixed mysigmlapted to extend therein and to Wedgedly nature in the presence oftwo Witnesses. engage the side Walls thereof and to Wedgedly engage thesaid bolt to securely lock JOSHUA BRYANL 5 the nutagainst movement withrelation to Witnesses:

said bolt. F. W. MEHLER,

In testimony that I claim the foregoing D. H. THOMPSON.

